Finding the Fourth Proportional to 11,048.32, 15,215.88 and 9,168.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,048.32 : 15,215.88 = 9,168.04 : x
2. Step 2: Convert to fraction form
   11,048.32/15,215.88 = 9,168.04/x
3. Step 3: Cross multiply
   11,048.32x = 15,215.88 × 9,168.04
4. Step 4: Simplify right side
   11,048.32x = 139,499,796.48
5. Step 5: Solve for x
   x = 139,499,796.48/11,048.32
6. Step 6: Final answer
   x = 12,626.34